baber/WOPTO huggingface dataset:
Patent GB-1233696-A (GB)
IPC: G03F9/00
Filed: 1969-01-29
Abstract: 1,233,696. Projection printing apparatus. WESTERN ELECTRIC CO. Inc. Jan.29, 1969, [Feb.6, 1968], No.4862/69. Heading G2A. A method of photographically printing a pattern 15<SP>1</SP> includes the steps of illuminating a photosensitive surface 12 with light 19 of a first frequency to which it is insensitive, forming with first lens 16 an image of the photo-sensitive surface at the plane of the pattern, viewing the pattern and the image and aligning as desired, and projecting light of a second frequency to which the surface is sensitive through the pattern and second lens which includes parts at least of the first lens to form an image of the pattern on the surface, the focal lengths of the first and second lenses being equal at the first and second frequencies respectively. A microscope 18 is used to view the pattern and the image of the surface. The first and second lenses both include a primary lens 16, and one or the other includes additionally a supplementary lens 17 to compensate for the difference between the focal lengths of the primary lens at the first and second frequencies. The photo-sensitive surface is preferably a photo-resist coating on a surface of a semiconductor wafer, and the pattern is a mask, and the method allows the degree and type of conductivity of the wafer to be modified in accordance with the photographically printed pattern on the photo-resist.
Patent GB-1234530-A (GB)
IPC: G21C17/02
Filed: 1969-09-29
Abstract: 1,234,530. Automatic temperature control systems. UNITED STATES ATOMIC ENERGY COMMISSION. Sept.29, 1969 [Oct.22, 1968] , No.47698/69. Heading G3R. A system for detecting and controlling boiling of a liquid metal coolant, particularly sodium, in a nuclear reactor comprises a means located in the reactor for measuring neutron flux density, the signals from which are passed to means for detecting cyclic variations and extracting a characteristic frequency of variation which controls the reactivity so that boiling is restricted to a determined band. The output from one or more neutron detectors 10 is amplified and passed to a frequency analyser 12 which may take the form of a simple band pass filter, a power spectral density function analyser or a cross power spectral density function analyser. The output from the analyser is passed to a threshold amplitude discriminator which only passes signals above a certain amplitude to a control rod adjustment system 14, 15 which inserts or withdraws reactor control rods in correspondence to the signals from discriminator 13. An amplitude/frequency display unit 16 may be incorporated together with a manually operated over-ride control 17. A warning system (not shown) may also be incorporated. The system may also be designed to incorporate a degree of redundancy. In-core and/or out-of-core neutron flux detectors may be used in any number or combination.
Patent GB-1237893-A (GB)
IPC: B26B19/38
Filed: 1968-06-21
Abstract: 1,237,893. Dry shavers. GILLETTE CO. 21 June, 1968, No. 29716/68. Heading B4B. To prevent the accumulation of hair and skin particles, the inner surface of the curved region i, Fig. 1, of the movable part 2 of a cutting head for mechanically-driven shavers is provided with an anti-adhesion coating e.g. polytetrafluorethylene. The side surfaces of the part 2 formed as cutters may also be provided with an anti-adhesion coating. The substance forming the coating may be used as a component of a shaving lotion which is brought into contact with the cutting head. The movable part of the cutting head comprises a cutting foil provided with rectangular openings bent over at rightangles at its two edges and clamped in a rightangled device. The outer shaving foil 1, Fig. 2, is also provided with rectangular openings and is bent over at its edges 3 and these bent-over portions 4 are mounted in a holder 12 by means of a retaining trough 11 and pins 8.
Patent GB-1258147-A (GB)
IPC: F27B9/06
Filed: 1969-11-25
Abstract: 1,258,147. Electric furnaces. MANSFELDKOMBINAT "WILHELM PIECK" VEB. 25 Nov., 1969, No. 57547/69. Heading F4B. [Also in Divisions H3-H5] A low-density, non-ferrous metal ingot 1 is heated to a uniform temperature by thermal conduction by pressing it between a plurality of electrically heated plates 2 in a furnace chamber. The chamber is defined by walls 4, a removable lid 5 and a base 3, all of thermally insulating material. The apparatus may comprise a number of such chambers of prefabricated construction for easy maintenance, assembly and extension. The temperature of the plates 2 is regulable and adjustable to the desired temperature of the ingot, e.g. for rolling.
Patent GB-1258941-A (GB)
IPC: H01B17/02
Filed: 1969-01-30
Abstract: 1,258,941. Insulators. NIPPON GAISHI K.K. 30 Jan., 1969 [13 June, 1968], No. 5232/69. Heading H2C. Gas pressure in a cement layer of a cap and pin insulator is released through holes formed in the pin or in the cement layer. Holes in the cement securing the pin may be provided by embedding rods of a material which burn away or melt as a result of the flashover. Such materials are synthetic resins (e.g. foam polystyrene) organic fibres, rubber metals (e.g. lowtemperature solder) or wood. The pin may be enlarged at the surface of the cement layer to prevent electrolytic action (Fig. 2A). Specification 1,025,554 is referred to.
Patent GB-1267162-A (GB)
IPC: F16K1/36
Filed: 1969-06-12
Abstract: 1,267,162. Valves. ISTAG A.G. SUHR/A.G. 12 June, 1969 [14 June, 1968], No. 29938/69. Heading F2V. A shut-off valve comprises a plunger 1 carrying an axially compressible sealing-ring 2 initially elastically compressed between two parts of the plunger 10, 11, and an operating spindle 5 arranged for further movement after abutment of the plunger 1 in closing position against a shoulder 12 of the casing whereby the compression of the sealing ring 2 is increased, and wherein the two parts 10, 11 of the plunger 1 are connected to the operating spindle 5 to be axially fixed with respect to one another, the two parts themselves being elastically deformable. In a modification (Fig. 3, not shown) a compensating piston (20) slides in the sleeve (26) so that on closing (left half of Figure) the sealing ring (28) is additionally biased, and on opening (right half of Figure) a bore 32 admits fluid to the downstream side prior to fully opening the valve.
Patent GB-1294979-A (GB)
IPC: C09C1/28
Filed: 1970-02-16
Abstract: 1294979 Short fibre asbestos DEUTSCHE GOLD-UND SILBER-SCHEIDEANSTALT 16 Feb 1970 [28 Feb 1969] 7286/70 Heading C1A Asbestos of high fibre content and short limiting fibre length is made from crude chrysotile by, (a) separating and preshortening the crude fibres in aqueous suspension by squeezing and/or shearing and/or cavitation in a hollander, refiner, disperser, dispersion pump or ultrasonic disperser, (b) separating the fibres, (c) breaking up the separated mass mechanically, and (d) grinding to a limiting fibre length of 250 Ám. in at least one grinding operation in a disc attrition mill or gas jet mill. The raw material is preferably prepurified and contains a low proportion of mineral impurity, and may be subjected to acid treatment before separating into fibres. For stage (a) of the process the suspension should have a maximum solids content of 30%, and the medium may or may not contain acid, and the pH may be raised, possibly above 7, towards the end of the separation. The suspension thus formed may be passed to a hydrocyclone to remove undecomposed raw material. Stage (b) preferably comprises centrifuging or filtration and may be followed by acid treatment and drying by heating to at least 105‹ C. until the moisture content is 3% or less. Stage (c) is preferably performed in a jaw crusher, hammer mill, or barbed roller crusher. Stages (c) and (d) may be combined in one operation in a grinding drier.
Patent GB-1294998-A (GB)
IPC: G01F1/64
Filed: 1971-08-24
Abstract: 1294998 Flowmeters LACORAY S A 24 Aug 1971 [2 Sept 1970] 39663/71 Heading G1N Resistance strain gauges 6, 7, Fig.1 are located diametrically on the inner surface of a pipe section 3 and connected into adjacent arms of a bridge network, whose unbalance signal is fed to a relay which is de-energized to operate an alarm if the difference between the strain gauge resistances, caused by the head of liquid on the lower resistor 7, falls below a predetermined value. The bridge network automatically compensates for changes in resistance due to the fluid-pressure and temperature. The strain gauges may be sunk into the pipe wall and covered with a flexible membrane.
Patent GB-1295650-A (GB)
IPC: H01L21/00
Filed: 1969-11-26
Abstract: 1295650 Semi-conductor devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 26 Nov 1969 [29 Nov 1968] 57792/69 Heading H1K A semi-conductor device including a relatively thick portion 3 and a thinner portion 2 is formed by providing on a flat semi-conductor substrate 20 a layer 21 having different conductivity and/ or conductivity type from the substrate 20, locally removing part of the substrate 21 to a depth approaching, but not reaching, its interface with the layer 21, and finally electrolytically etching down to the interface within the recess formed by the local removal. The local removal may itself be effected by electrolytic etching using an electrode in an insulating capillary, by drilling or grinding, or, in the preferred method, by spark erosion using an electrode which is moved steadily towards the substrate as erosion progresses. The electrolytic etch may, for a Si substrate, use an HF solution with Pt electrodes in the solution and on the substrate. In the embodiment shown the thin portion 2 of the device constitutes a flexible diaphragm for use, for example, in measuring fluid pressure. The portion 2 is part of a relatively high resistivity P-doped N-type layer 21 epitaxially deposited on the low resistivity Sbdoped N-type substrate 20, and contains four B-diffused P-type resistance strips such as 22, 23 constituting a Wheatstone Bridge strain gauge arrangement interconnected by Al strips 42, 46 &c. When the diaphragm 2 lies in the (111) plane the strain-dependence of resistance of the P-type strips is independent of strip orientation, and the strips are situated in two pairs, one near the centre of the diaphragm 2 and one near the periphery where it joins the thick annular pin 3. If the diaphragm 2 is situated in the (110) plane two of the P-type strips lie along the [110] direction while the other two lie along the [001] direction, along which axis resistance is relatively independent of strain for P-type material. For use in an accelerometer, a microphone, a displacement detector or a device for measuring surface radius of curvature, a thick central hub may additionally be provided, and the diaphragm may be continuous or may be divided into three radiating spoke-like strips joining the hub and rim, each strip containing a Wheatstone Bridge strain gauge arrangement.
Patent GB-1295809-A (GB)
IPC: A47B17/00
Filed: 1971-04-19
Abstract: 1295809 Multi-deck tables; shelving; umbrella stands; feet for furniture BREMSHEY AG 19 April 1971 [9 March 1970 7 Aug 1970] 23548/71 Headings A4B, A4H, A4U A table has a table top 1, at least two pairs of legs 2, 3, 4, 5, and one or more shelves 15, 36 each supported below the table top between one pair of legs and a rung 12<SP>1</SP> of a ladder framework 12 which is normally arranged in a vertical plane between and parallel to the pairs of legs, the framework 12 being pivotable away from its vertical position into a horizontal position against the top 1, to which it may be secured by a resilient tongue. The table top is carried by a framework 6, 7 (or 6<SP>1</SP>, 6<SP>11</SP>, 7, Figs.2, 3 (not shown)) having sockets 29 or spigots (9) to snap, receive or engage in spigots 30 on the legs or the legs. Bent resilient ends 17, of the ladder framework 12 are pivoted in brackets 18 on top 1 or inbores (20), Fig.3 (not shown) or bushes (21), Fig.2 (not shown) on the top framework. Spring steel rods 11 are mounted in selected holes 10 in the legs and receive grooves 40, 39 on the shelves. The ends of the shelves adjacent rungs 12<SP>1</SP> may include a U-shaped carrier strip 22, Fig.7, which may be interrupted for the mounting of two shelves on both sides of the same rung 12<SP>1</SP>; or they may be connected to the rungs 12<SP>1</SP> by grooves 39, 40 fitting thereover. The ends of the shelves may be connected to the table legs by spring-loaded bars 11<SP>1</SP>, Fig. 17, received in holes 10. A top frame 31 and drip tray 36 provide an umbrella stand. The legs may include snap-in castors 28.
Patent GB-1303101-A (GB)
IPC: B43L3/00
Filed: 1970-01-07
Abstract: 1303101 Tables for motor vehicles J V CROSS 19 April 1971 [7 Jan 1970] 856/70 Heading A4H An accessory for mounting on a motor vehicle steering wheel comprises a back panel 1 provided with a rear slot 4, Fig. 2 (not shown), shaped to fit over the steering wheel (6), and a flap 10 hinged to the panel 1 and supported in a selected inclined or horizontal operative position by a strut-like support 12 hinged to panel 1 and having hinged thereto a bar 13 which is slotted to receive a nut 14 on flap 10. Flap 10 is retained in a collapsed position against panel 1 by a magnetic catch 18, (19), Figs.3, 4 (not shown). Support 12 is retained in its collapsed position by a ball catch co-operating with a strip 7 on panel 1. The width of the rear slot 4 can be adjustable to suit different wheels. Parts 1, 10 comprise plastics, or plywood faced with a plastics laminate.
Patent GB-1303628-A (GB)
IPC: F15B15/10
Filed: 1969-01-02
Abstract: 1303628 Fluid-pressure operated bellows JOSEPH LUCAS (INDUSTRIES) Ltd 31 March 1970 [2 Jan 1969] 271/69 Heading F1D The output end 17 Fig. 1 of a fluid operated bellows 16 carries a thrust member 24 which is longitudinally adjustable in a direction perpendicular to the bellows axis so as to engage one of a plurality of spaced grooves 23 Fig.3 in an output arm 19 secured to a pivot spindle 18 having its axis normal to the plane containing the axis of the bellows 16 and that of the thrust member 24; the adjustment of the thrust member relative to the bellows end 17 serving to vary the torque applied to spindle 18. The end 17 also forms the end of a second bellows 15 which is supplied at 13a with fluid at a different pressure than that supplied to bellows 16 which may be vacuum.
Patent GB-1307232-A (GB)
Title: Machine tool gantries
IPC: B23Q1/26
Filed: 1969-06-24
Abstract: 1307232 Machine tool frames MARWIN MACHINE TOOLS Ltd 28 May 1970 [23 June 1969] 31725/69 Heading B3B A machine tool having a fixed bed and a gantry displaceable on the bed, the gantry comprising support members 12, 14 located one on each side of the bed and a beam 10 spaning the support members and being rigidly fixed to the support member 12 and slidable to its longitudinal axis on the support member 14. To permit freedom of sliding between the beam and the support 14 pads of low friction material such as P.T.F.E. are provided on the surfaces of the support which engage the beam. A key member 30 on the beam engages in a slot 18 on the support to ensure freedom of movement in the longitudinal direction of the beam only, retaining members 26 engaging the sides of the beam and being seemed to the top of the support.
Patent GB-1308369-A (GB)
Title: Convector type room heater
IPC: F24H3/00
Filed: 1970-06-09
Abstract: 1308369 Convector space heaters; thermal storage heaters E F HALLIWELL 15 July 1971 [9 June 1970] 27742/70 Headings F4S and F4U A convector space heater comprises an air duct defined by spaced-apart convergent walls 1, 2 and terminating in an outlet jet portion 3, heating means (shown as electric heaters 6) being located in the duct and means such as a temperature sensing element 7 being provided at the air inlet end of the duct for regulating the heating means. A heat storage mass 11 of firebrick heated by the hot air may be located in the duct to prolong the convection effect after the heaters 6 have been switched off. The heat storage mass 11 may consist either of a solid block with passages therethrough, or of loosely packed granules. As shown, the duct is contained within an outer casing 8 providing a relatively cool air jacket around the duct. The casing has air outlets 9 located near the jet portion 3 of the duct. Humidifying means 10 may be located with in the casing and the lower end of the casing and the duct may be open or alternatively closed by a perforated plate. To provide more rapid heating of the room space, the casing may incorporate an additional radiant electric heating element 12.
Patent GB-1315962-A (GB)
Title: Electro-chemical machining
IPC: B23H9/00
Filed: 1969-08-26
Abstract: 1315962 Electro-chemical machining TUBES Ltd 19 Nov 1970 [26 Aug 1969] 42450/69 Heading C7B A technique for electro-chemically machining a groove or slot in two workpieces simultaneously comprises placing two workpieces side by side and moving them relative to an electro-chemical machining tool whilst directing electrolyte on to the surfaces machined. The technique is particularly suitable for machining peripheral grooves in semi-cylindrical workpieces 10, 11 which are rotated slowly towards tool 12. The electrolyte is introduced through hollow shaft 23, passes through tool holder 13 and emerges as a jet from tool face 12a. The tool 12 is normally rotated about axis 23, however, in order to vary the depth of the groove the tool may be axially displaced by a mechanism fully described in Specification 1315963.
Patent GB-1323292-A (GB)
Title: Production of yarns from staple-fibre blends to the yarns produced and to fabrics made from such yarns
IPC: D02G1/18
Filed: 1969-12-19
Abstract: 1323292 Bulked yarns IMPERIAL CHEMICAL INDUSTRIES Ltd 15 Dec 1970 [19 Dec 1969] 62009/69 Headings D1F and D1W A blended staple fibre yarn comprises up to 75% by weight of drawn, low or normal shrinkage (e.g. 6% in boiling water) polyethylene terephthalate fibres and up to 50% of undrawn, optionally crimped, high shrinkage (e.g. 30% in boiling water) polyethylene terephthalate fibres, the latter having a length e.g. 38 m.m., significantly (at least 10%) less than the effective staple length e.g. 50 m.m., of the blend. The blend may also comprise up to 50% of cellulosic e.g. viscose rayon fibres. Yarn is spun on the cotton system wherein the stated difference in staple length ensures that the short fibres are carried, with adequate control, by longer fibres in the drafting stage(s) without risk of unwarranted attenuation thereof and consequent irregularities in the yarn. In the heat treatment of the final yarn or fabric woven from single or doubled such yarn to develop bulk and handle therein, the shrinking undrawn fibres tend to migrate towards the core of the yarn leaving an outer surface in which low shrinkage fibres predominate.
Patent GB-1323433-A (GB)
Title: Aluminum alloy and method for the manufacture thereof
IPC: H01B1/02
Filed: 1970-07-13
Abstract: 1323433 Aluminium base alloys SUMITOMO CHEMICAL CO Ltd and SUMITOMO ELECTRIC INDUSTRIES Ltd 13 July 1970 33816/70 An aluminium base alloy useful as electrical conductor material has a composition in the range Al and impurities the balance with the optional presence of grain refining elements, agehardening improving elements and/or corrosion resistance improving elements. The alloy is worked, e.g. rolled, while cooling from a temperature in the range from about 500-550‹ C at a rate of at least 1C‹ /second, the working including a stage of hot working, a stage of warm working and a stage in which working is effected whilst cooling from 100‹ C to room temperature and in which there is a reduction in area of at least 10 per cent. The alloy may subsequently be aged at 160-200‹ C and then cold worked. There may also be a stabilizing ageing at 100-150‹ C
Patent GB-1326370-A (GB)
Title: Lighting systems for road vehicles
IPC: F21V14/08
Filed: 1969-12-17
Abstract: 1326370 Road vehicle lamps JOSEPH LUCAS (INDUSTRIES) Ltd 1 Dec 1970 [17 Dec 1969] 61437/69 Heading F4R [Also in Division G1] A lighting system for a road vehicle including a light source 11 and an associated lens 15 is characterized in that the lens 15 is so disposed that, when the system is attached to a vehicle, a horizontally extending diameter of the lens 15 lies at an angle X of between 88 degrees and 84 degrees to the optical axis of a projector 12, the lens being tilted, about a vertical axis, so as to be tilted towards the near side of the vehicle equipped with the system. A mask 13 is situated between a light source 11 and the lens 15 and having therein an aperture across which a shutter 16 can be moved. The shutter 16 is activated by means sensitive to radiation received from an oncoming vehicle, the shutter being moved progressively to cut off sufficient of the projected beam to avoid dazzling the driver of the oncoming vehicle.
Patent GB-1333013-A (GB)
Title: Merocyanine dyes
IPC: C09B23/10
Filed: 1972-03-29
Abstract: 1333013 Organic compounds ILFORD Ltd 29 March 1972 [22 April 1971] 10890/71 Heading C2C [Also in Divisions C4 and G2] 1 - Ethyl - 2 - methyl - 5 - trifluoromethylsulphonyl benzimidazole is nitrated to form 6-nitro-2- methyl - 5 - trifluoromethylsulphonyl benzimidazole which is converted successively to the corresponding 6-amino and 6-(chloro or bromo) compounds.
Patent GB-1335386-A (GB)
Title: Systems for operating and controlling hydraulically driven winches hoists and the like
Inventor: AXELSSON E G
IPC: F15B11/04
Filed: 1970-06-26
Abstract: 1335386 Winches CATERPILLAR TRACTOR CO 17 Dec 1970 [26 June 1970] 31078/70 Heading B8B The hydraulic motors driving winding gear 3 for the luffing of a boom 4 and the hoisting of a load hook 5 on a tractor, each comprise a stationary cylinder in which pistons are sequentially radially displaceable to drive a cam ring associated with the winding drum, and free run means wherein an hydraulic pressure differential is applied to opposite ends of the pistons to displace them radially inwardly out of contact with the cam ring, whereby the latter can rotate freely. The motor controlling the boom luffing is supplied from a fixed displacement pump through a three position valve for selecting forward, reverse or neutral control of the motor. A spring operated winch drum brake is released only by fluid pressure tapped from the motor supply line when the motor is being operated. A limit valve is provided to be operated by the boom to exhaust the fluid supply and therefore stop the motor, and a counterbalance valve is provided in the motor feed circuit to open at a predetermined pressure to maintain the boom at a particular attitude. A counterbalance weight 2 is displaceable transversely of the tractor centreline by a pair of hydraulic rams, supplied from a fixed displacement pump and actuable by a three position valve, which when in its neutral position permits fluid to be fed to the hoisting motor for the load hook 5. A counterbalance valve is provided in the ram feed circuit for maintaining pre-set ram extensions. A two-speed motor for the hoisting winch is supplied from a fixed displacement pump through a three-way control valve, a brake and counterbalance valve being provided similar to those associated with the boom motor. The free fall condition for the hoisting winch motor is achieved when the hoist motor three position valve is in neutral and a free fall valve is operated to release the motor brake and establish the pressure differential across the pistons causing them to move radially inwardly.